I could trumpet you could trumpet she could trumpet we could trumpet you could trumpet they could trumpet
V-ing form
I could be trumpeting you could be trumpeting she could be trumpeting we could be trumpeting you could be trumpeting they could be trumpeting
Perfect
I could have trumpeted you could have trumpeted she could have trumpeted we could have trumpeted you could have trumpeted they could have trumpeted
V-ing perfect
I could have been trumpeting you could have been trumpeting she could have been trumpeting we could have been trumpeting you could have been trumpeting they could have been trumpeting
Negation
Simple form
I could not trumpet you could not trumpet she could not trumpet we could not trumpet you could not trumpet they could not trumpet
V-ing form
I could not be trumpeting you could not be trumpeting she could not be trumpeting we could not be trumpeting you could not be trumpeting they could not be trumpeting
Perfect
I could not have trumpeted you could not have trumpeted she could not have trumpeted we could not have trumpeted you could not have trumpeted they could not have trumpeted
V-ing perfect
I could not have been trumpeting you could not have been trumpeting she could not have been trumpeting we could not have been trumpeting you could not have been trumpeting they could not have been trumpeting
Interrogative form
Simple form
could I trumpet? could you trumpet? could she trumpet? could we trumpet? could you trumpet? could they trumpet?
V-ing form
could I be trumpeting? could you be trumpeting? could she be trumpeting? could we be trumpeting? could you be trumpeting? could they be trumpeting?
Perfect
could I have trumpeted? could you have trumpeted? could she have trumpeted? could we have trumpeted? could you have trumpeted? could they have trumpeted?
V-ing perfect
could I have been trumpeting? could you have been trumpeting? could she have been trumpeting? could we have been trumpeting? could you have been trumpeting? could they have been trumpeting?
Interro-negative form
Simple form
could I not trumpet? could you not trumpet? could she not trumpet? could we not trumpet? could you not trumpet? could they not trumpet?
V-ing form
could I not be trumpeting? could you not be trumpeting? could she not be trumpeting? could we not be trumpeting? could you not be trumpeting? could they not be trumpeting?
Perfect
could I not have trumpeted? could you not have trumpeted? could she not have trumpeted? could we not have trumpeted? could you not have trumpeted? could they not have trumpeted?
V-ing perfect
could I not have been trumpeting? could you not have been trumpeting? could she not have been trumpeting? could we not have been trumpeting? could you not have been trumpeting? could they not have been trumpeting?